Psalm 136  " Give thanks to The Lord, for He is good; For His lovingkindness is everlasting."  To give thanks - 'yadah' in the Hebrew, means to use the hand.  It can mean to throw or it can mean to worship.  It can mean confession or praise. To use the hands in response to the goodness of God, to His loving-kindness, is to show thankfulness in a physical manner.  It goes beyond just words.  The Lord is good - (towb) - beautiful, best, better, bountiful, cheerful, gracious, kindly, kindness, loving, merry, pleasing, precious, etc.  His lovingkindness is eternal.  He has always been and will always be lovingly kind. (checed) - kindness, beauty, favour, merciful, good.   Because of His attributes of goodness and lovingkindness we give thanks, we worship, we open our hands to Him. Psalm 145:16 says " Thou dost open Thy hand and dost satisfy the desire of every living thing."  The open hand ,
( yad) - shows power, means, and direction.  He gives, and we receive, and we are thankful.  And if we are truly thankful we will not hold the gift tightly in our closed fists, but we also will open our hands and bless The Lord with all of our strength, resources, and desires.

I Timothy 6
Paul gives Timothy more principles to teach and preach.  These are principles that conform to the doctrines with which Timothy has been entrusted. These are Truths to live by, to fight the good fight with, to keep and to live by.
Verses 1-2 have to do with relationships. Slaves who became Christians are the examples here.
If they served an unsaved master they were to respect and honor him, no matter what, so that the Name of The Lord would not be maligned.  If they served a brother in faith, they were  to respect him  all the more out of love.
v3-5 shows that not everyone agreed with this stance that Paul taught.  But Paul sharply rebukes them. They are not using sound doctrine, the teaching of Jesus Christ Himself.  Their arguments were conceited, ignorant, and not based on truth.  They had a morbid interest in controversial questions. They showed envy, strife, abusive language, evil suspicions, constant friction, and they had unwholesome interest in being rich.
Paul instructs Timothy to avoid these arguments and to flee this kind of thinking.  Instead, he is told to "pursue righteousness, godliness, faith, love, perseverance, and gentleness." To " fight the good fight of faith; take hold of the eternal life to which you were called and you made the good confession in the presence of many witnesses." v11-12.
Those who had riches are instructed to "not be conceited or to fix their hope on the uncertainty of riches, but on God who richly supplies us with all things to enjoy."  To remember that all they had came from God.  To be thankful for The Lord who opens His hands to us, and to open our hands to others.  To "do good, to be rich in good works, to be generous and ready to share." v18.
V 12 " take hold of the eternal life" and v19 " take hold of that which is life indeed" .

To live this way, by these principles, would then be to honor God in all that I do, showing respect to others.  To guard the Truth as given in His Word.  And to take hold of that which it eternal, not that which is fleeting.  This is fighting the good fight.  Lord God, I thank You for every gift that You have  graciously and lovingly bestowed by Your own Hand.  I desire to live for You with a thankful heart and an open hand towards others. Let me be always content in You.  Amen.